Keywords
self-healing, cementitious materials, repeatability, crack, micromechanics
Abstract
Designing self-healing into cementitious materials can open a new world of opportunities for resilient concrete infrastructure under service loading conditions. The self-healing process should be robust as well as repeatable, allowing for self-repair after multiple damage events. The repeatability poses great challenges when self-healing strategies mainly rely on the formation of low-strength calcium carbonate healing product, complicated by the localized cracking behavior of cementitious materials. This study aims at formulating a new cementitious material system with designed physical and chemical characteristics that favour repeatable self-healing. Advanced experimental methods, coupled with micromechanics theory, are adopted to probe and design repeatable self-healing into cementitious materials.
This study aims at formulating a new cementitious material system with designed physical and chemical characteristics that favor repeatable self-healing. This is achieved by answering fundamental questions such as what is the dominating self-healing mechanism within a crack, how do self-healing products grow, and what are the physical and chemical variables that influence the self-healing mechanism under certain environmental exposure conditions. Advanced experimental methods, coupled with micromechanics theory, are adopted to probe and design repeatable self-healing into cementitious materials.
DOI
10.5703/1288284316140
Included in
Designing Repeatable Self-Healing into Cementitious Materials
Designing self-healing into cementitious materials can open a new world of opportunities for resilient concrete infrastructure under service loading conditions. The self-healing process should be robust as well as repeatable, allowing for self-repair after multiple damage events. The repeatability poses great challenges when self-healing strategies mainly rely on the formation of low-strength calcium carbonate healing product, complicated by the localized cracking behavior of cementitious materials. This study aims at formulating a new cementitious material system with designed physical and chemical characteristics that favour repeatable self-healing. Advanced experimental methods, coupled with micromechanics theory, are adopted to probe and design repeatable self-healing into cementitious materials.
This study aims at formulating a new cementitious material system with designed physical and chemical characteristics that favor repeatable self-healing. This is achieved by answering fundamental questions such as what is the dominating self-healing mechanism within a crack, how do self-healing products grow, and what are the physical and chemical variables that influence the self-healing mechanism under certain environmental exposure conditions. Advanced experimental methods, coupled with micromechanics theory, are adopted to probe and design repeatable self-healing into cementitious materials.
